Hey Stephen, 1. You should be able to migrate from 1.8 to 1.10: https://ci.apache.org/projects/flink/flink-docs-release-1.10/ops/upgrading.html#compatibility-table
2. Yes, you need to recompile (but ideally you don't need to change anything). On Mon, Apr 6, 2020 at 10:19 AM Stephen Connolly < stephen.alan.conno...@gmail.com> wrote: > Quick questions on upgrading Flink. > > All our jobs are compiled against Flink 1.8.x > > We are planning to upgrade to 1.10.x > > 1. Is the recommended path to upgrade one minor at a time, i.e. 1.8.x -> > 1.9.x and then 1.9.x -> 1.10.x as a second step or is the big jump > supported, i.e. 1.8.x -> 1.10.x in one change > > 2. Do we need to recompile the jobs against the newer Flink version before > upgrading? Coordinating multiple teams can be tricky, so - short of > spinning up a second flink cluster - our continuous deployment > infrastructure will try to deploy the topologies compiled against 1.8.x for > an hour or two after we have upgraded the cluster >
